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G4H Functional Block
Diagram
NELL and Memory
adc_ref_en
ref
Note: these i/o ports revert
to inputs when NELL is
rf_5v_en
battery_voltage_monitor
battery_thermistor_en
ext_charger_en
backlight_en
red_charger_led_drv
green_call_led_drv
headset_jack_insert_det
i/o interface
trx_pa_bias
vibrator_en
2v85_main
nell_to_dsp_int (INT0)
ee_data
2k x 8
eeprom
ee_clk
eeprom
interface
sio_output_buffer_empty
size of the eeprom
presently under study
dsp_to_nell_int(EXTINT)
external interface
we
oe
address bus & data bus
2v85_main
2v85_ilb
512k x 16
64k x 16 ram
flash prom
Additonal storage space
required for Chinese
variants with MO/MT
ram_cs
rom_cs
SMS
dsp_cs
Figure 10b. NELL and Memory
2v85_main
psu sync
not connected
generator
13_mhz_clk
32 kHz calibration cntr
pulse width
buzzer_en
modulator
adc_ref
ref
converter
battery_temp_monitor
battery_id
pcb_temp_mon
watch dog timer
8 bit dac
reserved for future
lithium charger
(DAC1)
cpu_irqs
8 bit dac
reserved for future
VCXO adjustment
(DAC2)
uart_txd
reg
not used
cpu_irqs
pcmcia_txd
cpu_irqs
sio_input_clk
data
sio_output_clk
services
sio_output_load
support
sio_input_load
sio_data_tx
sio_data_rx
other_cpu_irqs
nell internal bus and data
mux
uart_reset
device
reset
eeprom_reset
control
arm7tdmi
sim_reset
core
wdt_reset
registers
device
uart_clks
clock
pwm_clks
control
sim_clks
registers
wdt_clks
32_khz_clk
nell
real time clock
timer & wdt
13_mhz_clk
rtc alarm
start/stop
ilb_caltrig
13_mhz_clk
6 NV storage registers
timer 1
32_khz_clk
13_mhz_clk
sleep duration timers
sleep time + sleep
timer 2
enable/disable
isolation logic timer
pll time
13m clock start-up timer
clock time
nell_
reset duration timer
reset
reset time
uart
ais trigger timer
ais time
isolation
cpu_wake_up_irq
ilb_irqs
enable
cpu
external
interface
devices
register
sim_irq
ilb_sim_data
sim_ilb_data
sim
32.768 kHz osc
interface
and clock
division circuitry
isolated logic block
32_khz_clk
cal trig counter
keycol(0:3)
keyrow(0:5)
keypad
interface
pwr_key
reserved for mech_ip
charging_volt_det
asynch
event
ext_sense_in
detect
uart_rxd
pcmcia_rxd
interrupt
hard_pwr_en
status
and
control
power
control
rg3_pwr_en
OR
module
2v85_ilb
soft_pwr_en
ilb ports
csp_dsp_reset
control
lcd_pwr_drv
sim_3v_5v_sel
lcd_cs
sim_pwr_en
sim
sim_data
maintenance
sim_clk
interface
sim_rst
ilb_reset
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